Chaeles p



(No Model.)

C. P. JACOBS.

Y LATE STRIP. f No. 350,488. PatentedOot. 12, 1886.

HYIIVESSES.

@JP l moda UNITED STATES PATENT OFFICE..

CHARLES P. JACOBS, OF INDIANAPOLIS, INDIANA.

LATH-STRIP.

.JPECIFICATION forming part of Letters Patent No. 350,488, dated October 12, 18236.

Application filed January Q5, 1886. Serial No. 189,725. (No model.)

To all whom it may concern:

.Be it known that I, CHARLES P. JACOBS, a resident of Indianapolis, Indiana, have made certain new and useful Improvements in,

SheathingLaths, a description of which is set forth in the following specification, reference being made to the accompanying drawings, in the several figures of which like letters rep-, resent like parts. Y

My invention relates to the construction of strips which are intended to be used both as lath and sheathing for walls and ceilings, and' will be understood from the following description.

In the drawings, Figure l represents a perspective view ol' several ot' the pieces nailed to the studding, one above the other, a portion of the plaster in place, the remainder being torn away to show the relative location of the parts. Fig. 2 represents a vertical section along the line ofthe studding in Fig. l.

In detail, b is the lath-strip, made in the shape indicated, one portion being thicker than the other7 the outer edge or side of the thick port-ion being beveled, as shown, the thin portion being about half the thickness of the thick portion. The edge ol' the thin portion is cut away, as shown at x, Figs. 1 and 2,

so that when one of these pieces is lplaced upon the other a groove is left between it and the beveled portion of thc adjacent lath, whereby a key for holding the plaster, p, is formed on one side and a recess or groove is provided behind. This groove allows for the expansion 5 and contraction ofthe wood of which the lathstrip is composed, for when wet mortar is applied to the lath-strips, even if they are wholly or partly dry, the wood will swell, and there will be an expansion and subsequently a contraction of the wood, and this will cause the 4o plaster to crack nnlesssome such groove is provided.

In nailing the strips upon the studding s it is necessary to nail the topinost one lirst, and then another is placed below it and shoved up against it and nailed, and by this means small nails can be used, as they are only required to go through the thin portion of the lath.

I am aware that boards having dovetail grooves eut in them to receive the plaster and intended to be used both as sheathing and lath, and that latlrpieces with one side made thinner than the other are not new,and Ido not broadly claim the same as my invention.

WVhat I do claim, however, as myinvention, and desire to secure by Letters Patent, is the following:

l. The sheathing-lath b, one portion thicker than t-he other, the lower end ofthe thin por- 6o tion cut away so as to leave an opening or groove between it and the next lath-strip, substantially as described.

2. A series'ot'lath-pieces, their upper portion thicker than the lower, the latter cut away so as to form a groove or opening between one lath-strip andthe one below it, to allow for the expansion and contraction of the material behind the thicker portion of the other, these pieces nailed to studding, the whole forming 7o a wall or ceiling to receive plasteriug, substantially as described.

In witness whereof I hereunto set my hand this 6th day of January. 1886.

CHARLES P. JACOBS.

Vitnessos:

J. E. Soo'rT, HA'r'rIE MURRY. 

